Tingling is a pins and needle like sensation anywhere on the body. May also be termed paresthesia. Can experience when elbow is bumped (funny bone), or even from frostbite. On its own, unlikely significant but may be part of nerve pathology from a variety of mechanisms.
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2

Neuritis:
Atypical facial pain can come and go. Severe spasms can occur (tic douloureux) that are in the tri-geminal distribution. You describe v2 distribution. However, ear and sinus disease must be excluded. A thorough medical evaluation would be appropriate.
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3

Dysesthesias:
Sleep depravation can bring out some unusual manifestations of neurological diseases. Please seek medical attention and have your doctor perform a neurological exam. Certain patterns in the exam can help doctors define if you need additional testing such as mris.
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5

May not be anxiety:
Anxiety can produce tension headache and difficulty concentrating ("brain fog"). But, if headache continues in location you describe for 4 weeks, it is possibly something more serious. Please consult your doctor, or a neurologist. They can recommend an MRI, EEG, or brain scan to rule out any serious issue. If all tests negative, consider CBT psychotherapy to treat your anxiety. Get help please
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6

Headache and anxiety:
I'm sorry you're having these symptoms and it's very difficult to determine the true cause without examining you. It would appear that with the headaches and the tingling this may be anxiety more than anything else at your age. You have a feeling of pain and wetness which I do not understand. The possibility of tempormandibular joint pain giving rise to your ear pain also exists. See an ENT doc.
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7

See a Spine Surgeon:
You may need further evaluation if symptoms persisting. You may need MRI of your cervical spine -- which may pick up other problems not seen on xray which may then identify the cause of your symptoms.
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8

No...:
...but there are two considerations here: One can't say with 100% certainty that it isn't; BUT: The likelihood that your symptoms ARE due to a tumor are exceedingly remote because brain tumors are exceedingly rare. (Out of all the conditions that people can come down with, why do they always leapfrog over all the common things straight to the worst-case scenario?)
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Need more info:
Your complaints are common to many conditions both physical and psychological. It would take an exam and a detailed personal history to try to understand what is going on. First start out with a visit to your family physician who after an exam and interview should be able to set you on the right road to feeling better.
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10

Several things:
Problems like these can only be correctly handled by your doctor in person. He/she needs to listen to you, perform an examination and possibly run labs or other tests. That's the only way he/she can find out what's going on and what to do about it.
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11

Not prednisone:
Prednisone does not cause tingling any where. Cold sores on lips may cause tingling before blisters appear. If persistent for weeks then see a neurologist for further investigations.
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12

See MD asap!:
That's a very good question. The list is long. It warrants you seeing your primary care physician or a neurologist immediately. You shouldn't want merely a list of possibilities with guesses and answers over the internet. You should want an exact and accurate answer asap! that will require you seeing someone for an evaluation.
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13

Nothing else:
At the least you're describing PARESTHESIAS of the lips but it certainly is a bit odd that it should be occurring just over the left 1/2 of your lips continuously. No facial droop on that side, drooling from the left corner of the mouth, difficulty closing the left eye? If yes, then, you may have a mild Bell's palsy. If not then, maybe getting some blood work would be indicated to check things.
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14

Several things:
This is a problem that requires a face-to-face meeting with your doctor. In that meeting, your doctor will listen to you, perform a throrough examination and possibly order labs or other tests. Based on this information, he/she will be able to tell you what's wrong and what to do about it.
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17

Could mean-or ???:
a lot of things....sometimes occurs just before, during, or after migraine headaches. It could be the result of putting something directly on the lips that interacts and causes irritation. It could be signaling the deficiency of certain vitamin supplements such as B12, folate, (folic acid) or B6 (pyridoxine). You should get a metabolic evaluation.
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19

If not a cold sore..:
Some roughness and mild redness on a lip can be lip eczema, which may be treated like skin eczema, using hydrocortisone cream (twice a day for 1 week) plus Vaseline or Aquaphor to retain moisture. Sometimes lip balm or lip sunscreen chemicals cause an allergic reaction. Other times a person is a primary lip-licker (it's her habit). Once cracked, lips can get irritated by routine foods and juices.
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21

Low calcium:
Tingling or hypoesthesia of the fingers, nose, toes, and or lips is a sign of low calcium. This can also be accompanied by leg and loot cramps, especially at night. This can be temporary 10-30% of the time after total thyroidectomy and permanent 1-3% of the time. Can be treated with calcium, rocaltrol, (calcitriol) and or rarely Natpara. You should have labs drawn that examines calcium and related levels.
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22

Comments:
The anatomy involves trigeminal nerve, but the cause may be complex. There is a sensory trigeminal neuropathy which could do this, but one might consider problems in jaw or mouth as a provocateur. Some intracranial situations should be excluded via MRI. A neurologist or a dentist could be a starting point.
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23

See MD:
Tingling lips is an unusual symptom. Perhaps you will develop a cold sore. However, dizziness can be caused by dozens of illnesses and many are serious. So, you must go see a doctor if you continue to have dizziness.
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25

Could be tingling:
The face up to the hairline, the inside of your mouth back to the gag-zone, the anterior tongue, your meninges, your eyes, & a little patch of skin in your ear canal, all send sensory input to the trigeminal nerve. The problem could be from the distal branches at the lip over the twists & turns of the nerve to the trigeminal nucleus in the brainstem. That's the part your doctor has to figure out.
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